公开(公告)号：US10564096B2

公开(公告)日：2020-02-18

申请号：US15759988

申请日：2016-09-13

Applicant: University of Florida Research Foundation, Inc.

Inventor： Norman G. Fitz-Coy ,  Kunal Shrikant Patankar ,  Matthew T. Moraguez

IPC: G01N21/55 ,  G01N21/31 ,  G01N21/47

Abstract: Methods, computer program products, and corresponding devices are provided for measuring the bi-directional reflectance distribution function (BRDF) of an object. An object is positioned relative to a BRDF measurement device. The BRDF measurement device comprises a turntable coupled to a background and a light source, the turntable configured to have the object positioned thereon; and a plurality of spectrographs configured such that each of the plurality of the spectrographs captures a reflectance spectra associated with the object from a different elevation angle relative to the object. A set of spectra data is captured by illuminating the object with the light source; and with each spectrograph, capturing a reflectance spectra associated with the object. The turntable is rotated such that an azimuthal angle between the object and the light source is changed. The capturing and rotating steps are repeated for a predetermined set of azimuthal angles.

公开(公告)号：US20180252642A1

公开(公告)日：2018-09-06

申请号：US15759988

申请日：2016-09-13

Applicant: University of Florida Research Foundation, Inc.

Inventor： Norman G. Fitz-Coy ,  Kunal Shrikant Patankar ,  Matthew T. Moraguez

IPC: G01N21/55 ,  G01N21/31 ,  G01N21/47

CPC classification number: G01N21/55 ,  G01N21/31 ,  G01N21/474

Abstract: Methods, computer program products, and corresponding devices are provided for measuring the bi-directional reflectance distribution function (BRDF) of an object. An object is positioned relative to a BRDF measurement device. The BRDF measurement device comprises a turntable coupled to a background and a light source, the turntable configured to have the object positioned thereon; and a plurality of spectrographs configured such that each of the plurality of the spectrographs captures a reflectance spectra associated with the object from a different elevation angle relative to the object. A set of spectra data is captured by illuminating the object with the light source; and with each spectrograph, capturing a reflectance spectra associated with the object. The turntable is rotated such that an azimuthal angle between the object and the light source is changed. The capturing and rotating steps are repeated for a predetermined set of azimuthal angles.